Power Quality Control Device of Power Supply System in Guandi Mine
Aiming at the problems of high reactive power and serious harmonic pollution in the power supply system of Guandi Mine,which lead to the low operating efficiency of underground equipment and even affect the normal production,this study designed a power quality control de-vice and conducted simulation,experiments,and practical applications.Based on the actual oper-ating conditions of the power supply system,we chose shunt voltage SVG to compensate for the reactive power and carry out harmonic control.Taking the TMS320F2812 DSP chip as the core,the device was embedded with an improved voltage outer loop control algorithm and an improved current inner loop control algorithm.The simulation verified the correctness and effectiveness of the control algorithm.Experimental tests verified that the device could synchronize the load volt-age and current phase and reduced the total harmonic distortion rate to 3.1%.Application results show that the device can effectively compensate for reactive power and realize harmonic control.
power supply systempower qualityreactive power compensationcontrol strat-egyharmonic wave